Gary, doesn't that oil-change interval vary based on the driving conditions? Mine was just over 9K when the sensor went to 0%.
At any rate, 6-8 oil filters max for 60K.

Steve

STOP terrorism - Drive a HYBRID

Vehicles:
350 miles a week ------------ 2006 HCH II, Magnetic Pearl, w/NAVI (born on May 25, 2006)
350 miles a month ---------- 2003 Mazda Tribute ES-V6
350 miles a year (for now) - 1986 Mercedes 560SL